working on a scottsman(I do not see many) most everything in this area is manitowoc which I like very much. anyway the machine is very dirty it sits in a welding shop and has not been touched in 3 years per the owner. it is flashing 2 red lights at the water led. the chart on the inside of the cover says low water level but it is full. I cleaned the machine for 30 mins. with nichol safe and ran it through the rinse for about as long. now when you mash the freeze it starts in harvest and then shuts off and flashes the 2 red lights. I spoke with another tech at lunch and he said I needed to clean the sensors. looking at the diagram online the only sensors I see are behind and below the evaporator, what is the easiest way to access these and will cleaning them with nichol safe send the unit back to freezing. thanks in advance for your replies this site is the best on the planet for what we do.